added unique ID

modm-io · Nov 5, 2021 · 657aeaf · 657aeaf
1 parent 1616278
commit 657aeaf
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Showing 2 changed files with 17 additions and 3 deletions.
diff --git a/src/modm/driver/rtc/mcp7941.hpp b/src/modm/driver/rtc/mcp7941.hpp
@@ -51,6 +51,7 @@ struct mcp7941
 		constexpr DateTime getDateTime(){
 			return date_time;
 		}
+		uint8_t unique_id[8];
 	private:
 		DateTime date_time;
 	};
@@ -78,6 +79,9 @@ class Mcp7941 :	public mcp7941,
 	inline modm::ResumableResult<bool>
 	setDateTime(DateTime);
 
+	inline modm::ResumableResult<bool>
+	getUniqueID();
+
 private:
 	mcp7941::Data &data;
 
@@ -89,6 +93,8 @@ class Mcp7941 :	public mcp7941,
 	const uint8_t addr_days = 0x04;
 	const uint8_t addr_months = 0x05;
 	const uint8_t addr_years = 0x06;
+
+	const uint8_t addr_unique_id = 0xF0;
 };
 
 } // namespace modm

diff --git a/src/modm/driver/rtc/mcp7941_impl.hpp b/src/modm/driver/rtc/mcp7941_impl.hpp
@@ -35,16 +35,24 @@ modm::Mcp7941<I2cMaster>::getDateTime(){
 	this->transaction.configureWriteRead(&addr_seconds, 1, scratch, 7);
 	if(RF_CALL(this->runTransaction())){
 		data.date_time.seconds = scratch[0];
-		data.date_time.seconds = scratch[1];
-		data.date_time.minutes = scratch[2];
-		data.date_time.hours = scratch[3];
+		data.date_time.minutes = scratch[1];
+		data.date_time.hours = scratch[2];
+		//no need for day of the week
 		data.date_time.days = scratch[4];
 		data.date_time.months = scratch[5];
 		data.date_time.years = scratch[6];
 	}
 	RF_END_RETURN(true);
 }
 
+template < typename I2cMaster >
+inline modm::ResumableResult<bool>
+modm::Mcp7941<I2cMaster>::getUniqueID(){
+	RF_BEGIN();
+	this->transaction.configureWriteRead(&addr_unique_id, 1, data.unique_id, 8);
+	RF_END_RETURN_CALL(this->runTransaction());
+}
+
 template < typename I2cMaster >
 inline modm::ResumableResult<bool>
 modm::Mcp7941<I2cMaster>::setDateTime(mcp7941::DateTime dt){